To Crush on Someone

When did the expression have a crush on someone come into use? The television series Downton Abbey has dropped this and other fun bits of language, but no need to worry about its historical accuracy — crush has been around since the early 1880s. To mash on someone or crash on someone are idioms in the same vein, and may derive from the idea of an emotional collision between two prospective flames. This is part of a complete episode.